Studies with enaminones: The reaction of enaminones with aminoheterocycles. A route to azolopyrimidines, azolopyridines and quinolines
作者:Sarah Almazroa、Mohamed H. Elnagdi、Abdellatif M. Salah El-Din
DOI:10.1002/jhet.5570410219
日期:2004.3
e resulted in its trimerisation and only triaroylbenzene 8a,d,e was isolated. The reaction of 1a,b,d with anthranilonitrile 9a and the reaction of 1a-c with the 2-aminocyclohexene thiophene-3-nitrile 10a afforded the cis enaminones 11a-c and 12a-c. Similarly, reaction of 1a-c with the methylanthranilate 9b and reaction of 1b,e with ethyl 2-aminocyclohexene thiophene-3-carboxylate 10b afforded the cis
烯胺酮1b,d,f与4-苯基-3-甲基-5-吡唑胺3a反应,生成吡唑衍生物4a-c,该吡唑衍生物在盐酸存在下于吡啶溶液中回流时易于环化,从而生成吡唑并[1,5] -一个]嘧啶5A-C。类似地,3(5)-氨基-1 H-三唑(3b)与1b,d,f反应,产生三唑并[1,5 - a ]嘧啶5d-f。相反,尝试将5-四唑胺(3c)与1a,d,e缩合会导致其三聚,只有三芳酰苯8a,d,e被隔离了。的反应1A,B,d与氨基苯甲腈9A和的反应1A-1C与2 aminocyclohexene噻吩-3-腈10A,得到顺式烯胺酮11A-C和12A-C。类似地,1a-c与甲基邻氨基苯甲酸甲酯9b的反应和1b,e与2-氨基环己烯噻吩-3-羧酸乙酯10b的反应分别得到顺式烯胺酮11d-f和12d,e。尝试环化11a-c变成喹啉失败。在家用微波炉中以全功率加热5分钟后,可能会影响11d成功环化成喹啉酮13。1a-c,f